Is it mandatory to use the particle cloud?

Hello, I have a boron board but I do not intend to use the particle cloud. I just want to connect to my own server using php requests using the LTE cellular network. I dont need a mesh network. Do I need to mandatory pay the monthly fee to use the particle cloud anyway? I dont see any other option to add my device and be able to program it in the web editor.

You have free access to Particle Cloud up to 100 devices.

The monthly fee is foremost for the cellular connection, not the cloud, but you can use 3rd party SIMs - only after the threshold of 100 devices (or multi gateway setup).

Thanks for your answers guys, I was referred to the tutorial about using 3rd pary SIMS.